Code Definition

B1296 — Power Supply Sensor Circuit Failure

System: Body  |  Type: Manufacturer-Specific  |  Make: Generic

About B1296

B1296 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1296 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B1296 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The power supply sensor is a voltage monitoring circuit that allows the BCM or relevant control module to track system voltage levels at the module input or at a referenced point in the electrical system. The sensor signal is used to manage charging system feedback, load shedding decisions, sleep current control, and to inform other modules about supply quality. DTC B1296 sets when the module detects an improper signal from the power supply sensor circuit, including an open circuit condition, erratic voltage that does not correlate with actual battery voltage, or a reading that falls outside t...

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